P043A OBD II Trouble Code Catalyst Temperature Sensor Circuit Malfunction Bank 2 Sensor 2

How to quickly diagnose, repair, and info on symptoms and causes of a P043A engine code which means the bank 2 sensor 2 catalyst temperature oxygen sensor circuit has malfunctioned.

Symptoms of P043A OBD II Trouble Code

  • Illuminated check engine light
  • Poor engine performance
  • Decreased fuel economy
  • Increased emissions

Common Causes of P043A OBD II Trouble Code

  • Faulty oxygen sensor
  • Wiring problems
  • Exhaust air/fuel mixture out of balance
  • Faulty PCM/PCM programming

Severity of P043A OBD II Trouble Code

The severity of this code is moderate. Symptoms of a P043A engine code may include: